期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 197, 期 -, 页码 673-680出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2017.04.032
关键词
Bioenergy; Renewable energy; Waste to energy; Wet waste; Biosolids
资金
- U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) Bioenergy Technology Office (BETO) [DE.AC06.76RLO 1830]
Within the United States and Puerto Rico, publicly owned treatment works (POTWs) process 130.5 Gl/d (34.5 Bgal/d) of wastewater, producing sludge as a waste product. Emerging technologies offer novel waste-to-energy pathways through whole sludge conversion into biofuels. Assessing the feasibility, scalability and tradeoffs of various energy conversion pathways is difficult in the absence of highly spatially resolved estimates of sludge production. In this study, average wastewater solids concentrations and removal rates, and site specific daily average influent flow are used to estimate site specific annual sludge production on a dry weight basis for >15,000 POTWs. Current beneficial uses, regional production hotspots and feedstock aggregation potential are also assessed. Analyses indicate 1) POTWs capture 12.56 Tg/y (13.84 MT/y) of dry solids; 2) 50% are not beneficially utilized, and 3) POTWs can support seven regions that aggregate >910 Mg/d (1000 T/d) of sludge within a travel distance of 100 km. (C) 2017 The Authors. Published by Elsevier Ltd.
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